Welltech Instrument Company LtdTel: 852-23491224 Fax: 852-26669436 Email: [email protected]
FBG SensorBare FBGWeldable FBGEmbedded FBGTemperature FBGFRP-FBGPressure FBGDisplacement FBGAcceleration FBGEarth Pressure FBGRebar FBGLoad FBGTilt FBG
BARE FBG (BARE Fiber Bragg Grating Sensor)Application: Structural Health Monitoring, Strain Monitoring, Composite Strain Monitoring
We manufacturer bare FBG and supply to world wide, our FBG is specially designed for civil engineering, bridge monitoring, structural health monitoring. To measure microstrain, 1.2pm(0.0012nm)=1µε.
Bare FBG Strain Sensor• CenterWavelength:anywavelengthbetween1510to1590nm• GratingLength:10mm(standard),1mm,2mm,3mm,5mm,15mm• StrippingArea:30mm• FBGType:Apodized• StrainRange:+/-3000µε(+/-5000µε as option)• Tolerance:+/-0.5nm
• SLSR:>15dB• ProofTest:>100kpsi• Coating:none,acrylateorpolyimide• FiberType:AcrylateSMF-28eorPolyimideSMF28e(OFSBF04446)• PigtailLength:1m• OperatingTemperature:AcrylateSMF-28fiber(5-120degC),Polyimide SMF28e(-40to300degC)
BARE FBG
Bare FBG Noted: Suitable for strain or temperature measurement
WecanwritethemultiFBGononefiber,distancebetween the fbg can be followed by customer’s requirement.
Grating Reoating Thickness:1.Nocoating2.Acrylate3.Polyimide
FBG Array
GratingLength: 1mm 2mm 3mm 5mm 10mm 15mmReflectivity: >70% >70% >70% >75% >90% >90%Bandwidthat-3dB:nm <0.7 <0.7 <0.7 <0.6 <0.3 <0.25
FC/PC
FC/PC
2500mm 1523 1531
1548.2 1540.5
1534.2 15361
1534
700mm 750mm 750mm
750mm750mm 750mm
100mm
Cable:0.9mmloosentube Cable:PolyimideFiber
Cable:SMF28-eFiber Cable:3mmjumpercable
Pigtail (cable)
Ordering Code
WELDABLE FBGWeldable FBG (Weldable Fiber Bragg Grating Sensor)Application: Structural Health Monitoring, Strain Monitoring, Composite Strain Monitoring
The weldable FBG is specially designed for outdoor applications for strain monitoring, particularly on structure with weldable surface. The obvious featureofthisproductmakeitcanbeeitherfixedwiththeboltfortemporarilymonitoringorfixedbyweldingforlongtermmonitoring.Ithasadvantagesofeasy implementation, rugged and high reliability.
Weldable FBG Strain Sensor• CenterWavelength:anywavelengthbetween1510to1590nm• StrainRange:+/-3000µε (+/-5000µε as option)• Resolution:1µε• Installation:ArcWeldable• Dimension:65x35mm• OperatingTemperatureRange:-30to80degC•Option:withtemperaturecompensationdesign (i.e.built-in2fbginside,oneforstrainmeasurement,anotherfortemperaturecompensation)• Dimension:130x35mm
Example:• Model:FBG-Weldable-1540.5-L4AA-R10AA • WeldableFBGwithwavelength1540.5nm• Leftpigtail:ArmorcablewithFC/APCconnector,4mlong • Rightpigtail:ArmorcablewithFC/APCconnector,10mlong
Typical Calibration Curve Spectrogram
Ordering Code
EMBEDDED FBGEmbedded FBG (Embedded Fiber Bragg Grating Sensor)The embedded FBG is designed for embedded into the interior of the concrete, reinforced concreteor compositematerials. Its ruggeddesignensure longterm monitoring.
Embedded FBG Strain Sensor• CenterWavelength:anywavelengthbetween1510to1590nm• StrainRange:+/-3000µε (+/-5000µε as option)• Resolution:1µε• Installation:Embedded• Dimension:35x60mm(or35x100mm)• OperatingTemperatureRange:-30to80degC• Option:withtemperaturecompensation (i.e.built-in2fbginside,oneforstrainmeasurement, another for temperature compensation)• Dimension:35x130mm
Typical Calibration Curve
Ordering Code
TEMPER ATURE FBGTemperature FBG (Temperature Fiber Bragg Grating Sensor)Application: Temperature measurement
ThetemperatureFBGisdesignedtomeasuretheexteriorandinteriortemperaturesofvariousstructures,whichcanbeembeddedintotheinteriororstickonthesurfaceofthemeasuredobject.WecanfollowcustomerrequirementtomakeanyshapeoftemperatureFBG.
Ordering Code
Temperature FBG (Standard)• Wavelength:anywavelengthbetween1510to1590nm• TemperatureRange: -20to85degC (Option1:-20to150degC) (Option2:-50to85degC)• Resolution:0.1degC• Accuracy:1degC• Fiber:SMF-28orcompatible• Dimension:Φ8x100mm
Temperature FBG (Ceramic Type)• TemperatureRange:-20to85degC(-20to150degCasoption)• Resolution:0.1degC• Accuracy:1degC• Fiber:SMF-28orcompatible• Dimension:40x10x5mm
Temperature FBG (Ceramic Type)• TemperatureRange:-20to85degC(-20to150degCasoption)• Resolution:0.1degC• Accuracy:1degC• Fiber:SMF-28orcompatible• Dimension:40x4x5mm
Temperature FBG (Bare Type)• TemperatureRange:-20to250degC• Resolution:0.1degC• Accuracy:1degC• Fiber:SMF-28orcompatible
FRP FBGFiber Reinforced Polymer FBG (FRP FBG)TheFRPFBGisdesignedfordisplacementmeasurement
• GlassFRP• CarbonFRP FRP-FBG Strain Sensor• Wavelength:anywavelengthbetween1525to1565nm• SensingLength:12mm• StrainRange:>5000µε• Accuracy:<0.1%(about2-3ue)• Resolution:1ue• Repeatability:<0.5%• Linearity:<0.5%• Reflectivity:>90%• SideLobeIsolation:>15dB• Length:50mmto2m(or>2m),pleasespecifywhenordering• Material:GlassorCarbonFiberReinforcedPolymer• Type:EmbeddedTypeorWeldableType
Typical Calibration Curve
Ordering Code
PRESSURE FBGPRESSURE FBG (Pressure Fiber Bragg Grating Sensor)
Fiber Reinforced Polymer FBG (FRP FBG)ThePressureFBGisdesignedforwaterlevelmonitoring
Pressure FBG • PressureFBGSensor• Range:0.35, 0.7,1,2,3,5,7or10Mpa• Dimension:26x164mm(option:12mmx164mm)• Accuracy:0.3%F.S.• Resolution:0.05%F.S.• Wavelength:1510to1590nm• WorkingTemperature:-30to70degC(option:upto150C)• TemperatureCompensatedpressuremeasurement.(i.e.onewavelengthforpressurefbg)
Option:• Dualwavelengthoutput:onefortemperature,oneforpressure Ordering Code
Displacement FBG (Displacement Fiber Bragg Grating Sensor)The displacement FBG is designed for displacement measurement
Displacement FBG • Wavelength:anywavelengthbetween1510to1590nm• StandardRange:100mm• Accuracy:1mm• Reflectivity:>90%• WorkingTemperature:-30to80degC
DISPL ACEMENT FBG
Ordering Code
Typical Calibration Curve
Acceleration FBG (Acceleration Fiber Bragg Grating Sensor)
Suitable for vibration, security sensingApplication: bridge monitoring, pipeline security monitoring
Acceleration FBG SensorType1:• Range:5g• FrequencyRange:0-40Hz• Dimension:72x54x37.5mm Type2:• Range:0.5g• FrequencyRange:>100Hz• Dimension:54x48x24.5mm • Wavelength:1525to1565nm• WorkingTemperature:-30to70degC
ACCELER ATION FBG
1538.4
1538.2
1538
1537.8
1537.6
1537.4
1537.2
1537
1536.8
1536.6
1536.4
1 87 173 259 345 431 517 603 689 775 861 947 1033 1119 12051291 1377 1463
Ordering Code
Earth Pressure FBG (Earth Pressure Fiber Bragg Grating Sensor)TheEarthPressureFBGisdesignedforearthpressuremeasurement
Earth Pressure FBG Sensor• Dimension:160mmdia,25mmthickness• WavelengthRange:anywaywavelengthbetween1510to1590nm• Measurerange:0.6MPa• Accuracy:3%• Resolution:0.66%• Repeatability:<1.32%• Linearity:<0.66%• Reflectivity:>90%
EAR TH PRESSURE FBG
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Calibration Curve
Rebar FBG (Rebar Fiber Bragg Grating Sensor)TheRebarFBGisdesignedformeasuringstrainsinfoundations,slurrywalls,precastpiles,caissons,bridgeabutments,tunnel liners, etc.
Rebar FBG Sensor• Range:200MPa• Accuracy:<=1%• Resolution:<=0.1%F.S.• Wavelength:1525to1565nm• WorkingTemperature:-30to70degC• RebarDiameter:12mmor25mm
REBAR FBG
Ordering Code
Wavelength VS Temperature Curve
LOAD FBG
Load FBG (Load Fiber Bragg Grating Sensor)TheLoadFBGisdesignedformeasuringload,maximumupto 1000ton is available
Load FBG Sensor• Range:100,300,500,700,1000,2000,3000ton• Wavelength:1525to1565nm• Accuracy:0.3%F.S.• Sensitivity:0.05-0.1%F.S.• Reflectivity:>85%• WorkingTemperature:-30to70degC
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The tilt FBG is designed for tilt measurement
Tilt FBG Sensor• Range:+/-5deg • Dimension:90x70x27cm• Withtemperaturecompensation• Wavelength:1525to1565nm• Resolution:0.01%F.S.• Accuracy:1%F.S.• WorkingTemperature:-25to80degC
TILT FBG ( Tilt Fiber Bragg Grating Sensor)
Ordering Code
A Wavelength
B Wavelength